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LibJS: Allocate ExecutionContext memory using alloca() when possible

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This should be faster than heap allocation. However, heap allocation is
still necessary in some cases, such as with generators and async
functions.
This commit is contained in:
Aliaksandr Kalenik
2025-04-23 23:44:24 +02:00
committed by Andreas Kling
parent 5a92929282
commit a329868c1b
Notes: github-actions[bot] 2025-04-24 08:32:11 +00:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/LadybirdBrowser/ladybird/commit/a329868c1bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4434
Reviewed-by: https://github.com/alimpfard
10 changed files with 42 additions and 12 deletions
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3
Libraries/LibJS/SourceTextModule.cpp
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@@ -701,7 +701,8 @@ ThrowCompletionOr<void> SourceTextModule::execute_module(VM& vm, GC::Ptr<Promise
}
// 1. Let moduleContext be a new ECMAScript code execution context.
auto module_context = ExecutionContext::create(registers_and_constants_and_locals_count, 0);
ExecutionContext* module_context = nullptr;
ALLOCATE_EXECUTION_CONTEXT_ON_NATIVE_STACK(module_context, registers_and_constants_and_locals_count, 0);
// Note: This is not in the spec but we require it.
module_context->is_strict_mode = true;